72 DETECTION OF ADULTERATIONS. 



in pathologic spleen, liver and kidneys. Microscopic 

 tests show that amyloid is similar to starch in size, form 



and behavior. There is, however, a sharp distinction be- 

 tween them in their reactions with water. By heating 

 with water amyloid does not form a paste such as starch 

 forms. For proving the presence of starch the results of 

 microscopical examinations must be confirmed at least 

 by the iodine and water tests. The same holds good for 

 the detection of dextrin, glue, or gums, sometimes used 

 for adulteration. For these, too much reliance should 

 not be placed upon the results of tests by any one 

 method. 



